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Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > IIS: Error 503 Service unavailable on Windows Server 2008 with IIS 7.0

IIS: Error 503 Service unavailable on Windows Server 2008 with IIS 7.0

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Created by Interspire Import, last modified by MindTouch on Jun 23, 2016

Views: 2,964 Votes: 1 Revisions: 10

Issue:

IIS: Error 503 Service unavailable pages display after removing McAfee Host Intrusion Prevention. McAfee Host Intrusion Prevention has been shown to interfere with SQL queries, so SolarWinds recommends that you uninstall it. Uninstalling McAfee Host Intrusion Prevention from a server running Windows Server 2008 with IIS 7.0 may cause IIS to display IIS: Error 503 Service unavailable pages.

Resolution:

The resolution to this condition is provided in the McAfee KnowledgeBase article, "Removing Host Intrusion Prevention 8.0 on a server running IIS 7.0 does not remove the ISAPI references".

This article applies to all SolarWids Orion products running on Windows Server 2008 with IIS 7.0

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